Paper-feed guide for platen-presses.



A H. H. STRAIT. A PAPER FEED GUIDE FOR PLATEN PRESSES.

APPLICATION FILED Ammo, 1908.

910,155. Yatented Jan. 19. 1909.

HOSEA H. STRAIT, OF ST. LOUIS, MISSOURI.

PAPER-FEED GUIDE FOR PLATEN-PRESSES.

Specication of Letters Patent.

Patented J'an. 19, 1909.

Application led August 19, 1908. Serial No. 449,248.

To all whom it may concern:

Be it known that I, HosnA H. STRAIT, a citizen of the United States of America, residing at the city of St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Paper-Feed Guides for Platen-Presses, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification.

My invention relates to a new and useful improvement in paper-feed-guides for platen presses, and has for its object to provide a simple, durable, inexpensive, and

f quickly adjustable guide.

Figure I is a plan view of a tympan and tympan drawer showing a plurality of my improved guides mounted on the tympan. Fig. II is an enlarged top or plan view of my guide with its parts in locked position. Fig. III is an enlarged side elevation of my guide with its parts in locked position and with a fragment of the tympan and platen in section. Fig. IV is an enlarged vertical longitudinal section taken on the line IV-IV, of Fig. II, showing the parts in half locked position. Fig. V is an enlarged side elevation of my guide with its parts in unlocked position. Fig. VI is an enlarged plan view of the blank from which my guide is preferably formed.

A designates the platen of a job printing press, B the tympan mounted thereon, O the tympan-drawer, and D the object to be printed resting in position on the tympan and abutting against a plurality of my improved paper feed guides.

I preferably form my guide, with the exception of the lever to be hereinafter more particularly described, from one piece of metal, as shown in Fig. VI thus greatly simplifying its construction, though it is obvious that I do not limit myself to this detail of construction.

1 designates a pair of parallel prongs provided with indentations 2 near their extremities; said prongs being pointed and beveled at their upper sides, as seen at 3. These prongs form the base portion of my improved guide, and are integrally connected to a body portion 4.

5 designates a spring-tongue which projects forwardly from the body portion 4, and preferably integral therewith, and is situated intermediate of the prongs 1. The said spring-tongue terminates at its forward end in a rectangular shaped lug or head 6. At a point in close proximity to the head 6 the spring-tongue 5 is bent upwardly in the arc of a circle imtil the forward part of the head 6 is at a substantially right angle to the plane of the said springtongue 5. The forward portion of the head 6 is then bent downwardly beginning at a point immediate of its center, as shown by the dotted line in F ig.` VI, forming a face portion 6 against which the object to be printed abuts. This face portion 6 is substantially at a right angle to the plane of the spring tongue 5. The lower end of the face portion G terminates in a beveled edge which is adapted to register with the indentations 2 on the prongs 1. 7 is an inturned lip struck up from the head portion G.

The blank shown in Fig. VI is bent upwardly at a point as seen at 8 so that the two sections are at a right angle to each other. The blank is again bent forwardly at a point, as seen at 9, Fig. VI, until the upper section is parallel to the lower or base portion, and extending longitudinally therewith. The spring-tongue 5 is bent upwardly at its intersection with the body portion 1 and at substantially a right ang e thereto. The spring-tongue 5 now occupies a position substantially intermediate the upper and lower sections of the guide. By this construction a clearance is provided for between the spring-tongue 5 and the prongs 1, and between the spring-tongue and the upper section of my guide.

l0 designates parallel lever supporting arms which extend over the prongs 1, and which are provided at their extremities with boxes 11 in which trunnions 12 of a two armed lever 13 are journaled. The said lever 13 is bent so as to provide a long and a short arm. The trunnions 12 are arranged at the junction of the two arms. The lower and shorter arm of the lever 13 engages the upper face of the spring tongue 5 immediate of its forward end, and by reason of the said sprinU-tongue being bent upwardly in the arc of a circle the said short arm of the said lever continues in engagement withfthe upper and inner face of the said spring-tongue and portion of the head 6, the free upward movement of the said short arm being limited by the inturned lip 7. The upper and longer arm of the lever 13 is the grip arm and controls the movement of the short arm of the said lever.

In the use of my improved paper-feed-i guide the grip arm of the lever 13 is moved rearwardly until the parts are in an unlocked position as shown in Fig. V, and which is caused by the short arm of the lever 13 impinglng against the under portion of the inturned lip 7 and by reason of the continued rearward movement of the grip arm of the said lever, forces the spring-tongue 5 upwardly and out of its normal position. rhe pointed ends of the prongs 1 are then caused to puncture the tympan at any place the operator may desire, and are pushed thereunder to about the point where they are to remain stationary. At this point the operator releases his pressure on the grip arm of the lever 13 when the spring-tongue returns to its normal half-locked position as shown in Fig. IV. The tympan is now slightly bound between the beveled edge of the face portion 6 and the upper faces of the prongs 1 and the guide is prevented from free movement. The operator then adjusts the guide to the proper degree and when this is obtained he moves the grip arm of the lever 13 forwardly until it rests against the upper portion of the head G. The short arm of the lever 13 being moved rearwardly forces the spring tongue 5 downwardly which forces the head 6, the face portion 6 and the lower edge of the face portion G also downwardly and causes the under face of the portion of the tympan immediately over the indentations 2 of the prongs 1 to enter therein by reason of the pressure of the springtongue 5 and its conjoined head 6 andthe beveled edge of the face portion 6. The parts are now in the position shown in Fig. III. The looked position is maintained by reason of the fact that when the grip arm of the lever 13 is in the position shown in Fig. III, the upward pressure of the springtongue 5 vagainst the short arm of the said lever is substantially off center and tends to hold the grip arm of the said lever in its forward position.

I claim:

l. In a paper feed guide, a pair of prongs, each provided with an indentation extending transversely thereof, a spring tongue extending forwardly from the rearr ends of said prongs and having a vertical lug at its forward end located above said prongs, and a lever whereby said lug may be moved toward the indentations in said prongs.

V2. In a paperfeedguide, a pair of prongs, a spring-tongue having a downwardly projecting head or lug, an upturned inwardly projecting lip carried by said head or lug, a pair of lever supporting arms, a Ylever oarried by sai-d arms and adapted to engage the upper face of said spring-tongue and the lower face of said upturned inwardly projecting lip, substantially as set forth.

HGSEA H. STRAI'I. In the presenceof- Y H. G. Coon,

LILY Ros'r. 

